MS ABI: Don't unnecessarily use CGM abstraction

If we are in MicrosoftCXXABI, we don't need to use CGM to get a
TypeDescriptor.

llvm-svn: 212463

clang/lib/CodeGen/MicrosoftCXXABI.cpp

@@ -2778,7 +2778,7 @@ MSRTTIBuilder::getBaseClassDescriptor(const MSRTTIClass &Class) {
   // Initialize the BaseClassDescriptor.
   llvm::Constant *Fields[] = {
       ABI.getImageRelativeConstant(
-          CGM.GetAddrOfRTTIDescriptor(Context.getTypeDeclType(Class.RD))),
+          ABI.getAddrOfRTTIDescriptor(Context.getTypeDeclType(Class.RD))),
       llvm::ConstantInt::get(CGM.IntTy, Class.NumBases),
       llvm::ConstantInt::get(CGM.IntTy, Class.OffsetInVBase),
       llvm::ConstantInt::get(CGM.IntTy, VBPtrOffset),